Question: What is written by the author of The Book of Disquiet, that has languages of expression is Portuguese.
Paraphrase: What is written by the creator of The Book of Disquiet, that has languages of expression is Portuguese.
SPARQL (Wikidata): SELECT ?answer WHERE { wd:Q2632627 wdt:P50 ?answer . ?answer wdt:P1412 wd:Q5146}
Answer: Fernando Pessoa